一个动态菜单的例子(downmoon)

前台文件：

<SCRIPT language="javascript">...
        
        function ToggleVisible()
        ...{
            $(arguments[0]).toggle();
            //alert($(arguments[1]).src);
            if($(arguments[0]).style.display == "none")
            ...{
                $(arguments[1]).src="/images/toggle_gray_down.gif";
            }
            else
            ...{
                $(arguments[1]).src="/images/toggle_gray_up.gif";
            }
        }
        
        

    </SCRIPT>
        <table width="200"
        border="0" align="center" cellPadding="0" cellSpacing="0" >
        
                <asp:label id="labMenuItem" runat="server"></asp:label>
                
                 <tr>
          <td height="105" valign="bottom"><img src="/images/favourable.gif" alt="中国蔬菜网最新优惠消息" width="200" height="100" /></td>
        </tr>
    
        
    </table>

后台文件：

using System;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data;
using System.Text.RegularExpressions;
using System.Text;
namespace Vegnet.User.Web.UI.Controls
{


    /// <summary>
    /// Menu 的摘要说明。
    /// </summary>
    public class Menu:Vegnet.Common.Web.UI.Controls.BaseControl
    {

        #region Members
        #region 菜单内容,

        //Vip栏目标记
        string _vipImage="&nbsp;<img src="/Images/Vip.gif">";

        //其实不应加在这里，应在公用组件里，
        //此处应用Static 变量，待改！!　
        // downmoon 2006-12-11

        #region 显示菜单ID
        protected    int MenuExtendDivID
        {
            get
            {
                object o =ViewState["MenuExtendDivID"];
                
                if(o!=null)
                {
                    return int.Parse(o.ToString());
                }
                else
                {
                    return -1;
                }
            }
            set
            {
                ViewState["MenuExtendDivID"]=value;

            }
        }
        #endregion
        //欢迎与邀月交流,net技术与软件架构　2006年12月4日

        #region 公共菜单头

        /// <summary>
        /// 有些项展开
        /// </summary>
        protected static  string  publicPreExtend
        {
            //onmouseout='this.style.cursor=default' onmouseover=this.style.cursor='hand'
            get
            {
                return @"<div id='{0}Section'>
                        <div id='{0}Head' class='leftmenu' onclick={1}ToggleVisible('Table_{0}','Img_{0}');{1}  style=""cursor:pointer;"">
                            <img src='/images/toggle_gray_up.gif' border='0' hspace='5' id='Img_{0}'><span>{2}</span>
                        </div>
                        <div id='Table_{0}'>
                            <table class='menu' cellpadding='0' cellspacing='0' align='center' ID='Table__{0}'>
                                <tr>
                                <td align='left'>";
            }
        }
        /// <summary>
        /// 默认不展开
        /// </summary>
        protected static  string  publicPre
        {

            //onmouseout=this.style.cursor='default' onmouseover=this.style.cursor='hand' 
            get
            {
                return @"<div id='{0}Section'>
                        <div id='{0}Head' class='leftmenu' onclick={1}ToggleVisible('Table_{0}','Img_{0}');{1}  style=""cursor:pointer;"">
                            <img src='/images/toggle_gray_down.gif' border='0' hspace='5' id='Img_{0}'><span>{2}</span>
                        </div>
                        <div id='Table_{0}' style='DISPLAY:none'>
                            <table class='menu' cellpadding='0' cellspacing='0' align='center' ID='Table__{0}'>
                                <tr>
                                <td align='left'>";
            }
        }
        #endregion 

        #region 公共菜单尾
        protected static  string  publicEnd
        {
            get
            {
                return @"</td></tr></table></div></div>"; 
            }
        }


        #endregion

        #region 会员资料
        /// <summary>
        /// Menuid==0
        /// </summary>
        protected   string UserMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><A href='/User/Modify.aspx?dvid=0' >帐户修改</A></li>
                                        <li><A href='/User/ModifyChangePwd.aspx?dvid=0'  >密码修改</A></li>
                                        
                                    </ul>"
                    +publicEnd;
                //<li><A href='#?dvid=0'  >积分管理</A></li>
                    s=(MenuExtendDivID==0)?(publicPreExtend+s):(publicPre+s);
                                                    
                s=string.Format(s,"User",""","会员资料");
                return s;
            }
        }
        #endregion 2
        #region 企业管理
        /// <summary>
        ///  Menuid==1
        /// </summary>
        protected   string CompanyMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><A href='/User/Company/?dvid=1'  >企业信息</A></li>
                                        <li><A href='/User/news/?dvid=1&tp=4'  >企业动态</A></li>
                                        <li><A href='/User/CompanyExtend/Award.aspx?dvid=1' >企业荣誉</A>"+_vipImage+@"</li>
                                        <li><A href='/User/CompanyExtend/People.aspx?dvid=1' >企业家风采</A>"+_vipImage+@"</li>
                                        </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==1)?(publicPreExtend+s):(publicPre+s);

                                                    
                s=string.Format(s,"Company",""","企业管理");
                return s;
            }
        }
        #endregion 
        #region 产品列表
        /// <summary>
        ///  Menuid==2
        /// </summary>
        protected   string ProductInfoMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='/User/Product/Insert.aspx?dvid=2'  >新增产品</a>"+_vipImage+@"</li>
                                        <li><a href='/User/Product/?dvid=2&st=1'  >当前发布产品</a>"+_vipImage+@"</li>
                                        <li><a href='/User/Product/?dvid=2&st=-3'  >未发布产品</a>"+_vipImage+@"</li>
                                        <li><a href='/User/Product/?dvid=2&st=0'  >等待审核产品</a>"+_vipImage+@"</li>
                                        <li><a href='/User/Product/?dvid=2&st=-1'  >未通过审核产品</a>"+_vipImage+@"</li>
                                        <li><a href='/User/Product/?dvid=2&st=2'  >推荐产品</a>"+_vipImage+@"</li>
                                        </ul>"
                            +publicEnd;
                //<li><a href='/User/Product/?dvid=2&st=-1'  >未通过审核产品</a></li>
                s=(MenuExtendDivID==2)?(publicPreExtend+s):(publicPre+s);

                                                    
                s=string.Format(s,"ProductInfo",""","产品库");
                return s;
            }
        }
        #endregion 
        #region 供应列表
        /// <summary>
        ///  Menuid==3
        /// </summary>
        protected   string TradeForSellMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='/User/Trade/Insert.aspx?tp=1&dvid=3'  >新增供应信息</a></li>
                                        <li><a href='/User/Trade/?tp=1&st=1&dvid=3'  >当前发布列表</a></li>
                                        <li><a href='/User/Trade/?tp=1&st=0&dvid=3'  >等待审核列表</a></li>
                                        <li><a href='/User/Trade/RejectList.aspx?tp=1&st=-1&dvid=3'  >未通过审核列表</li>
                                        <li><a href='/User/Trade/default0.aspx?tp=1&st=1&dvid=3'  >供应信息配对</a>"+_vipImage+@"</li>
                                        
                                        </ul>"
                    +publicEnd;
                //<li><a href='#?dvid=3'  >订阅商机</a></li>
                s=(MenuExtendDivID==3)?(publicPreExtend+s):(publicPre+s);
                                                
                s=string.Format(s,"TradeForSell",""","供应信息");
                return s;
            }
        }
        #endregion 
        #region 求购列表
        /// <summary>
        ///  Menuid==4
        /// </summary>
        protected   string TradeForBuyMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='/User/Trade/Insert.aspx?tp=2&dvid=4'  >新增求购信息</a></li>
                                        <li><a href='/User/Trade/Default2.aspx?tp=2&st=1&dvid=4'  >当前发布列表</a></li>
                                        <li><a href='/User/Trade/Default2.aspx?tp=2&st=0&dvid=4'  >等待审核列表</a></li>
                                        <li><a href='/User/Trade/RejectList.aspx?tp=2&st=-1&dvid=4'  >未通过审核列表</li>
                                        <li><a href='/User/Trade/default20.aspx?tp=2&st=1&dvid=4'  >求购信息配对</a></li>
                                        </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==4)?(publicPreExtend+s):(publicPre+s);
                                                
                s=string.Format(s,"TradeForBuy",""","求购信息");
                return s;
            }
        }
        #endregion 
        #region 代理合作列表
        /// <summary>
        ///  Menuid==5
        /// </summary>
        protected   string TradeForDeleAndCorpMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='/User/Trade/Insert.aspx?tp=3&dvid=5'  >新增信息</a></li>
                                        <li><a href='/User/Trade/Default3.aspx?tp=3&st=1&dvid=5'  >当前发布列表</a></li>
                                        <li><a href='/User/Trade/Default3.aspx?&st=0&dvid=5'  >等待审核列表</a></li>
                                        <li><a href='/User/Trade/RejectList.aspx?&st=-1&dvid=5'  >未通过审核列表</li>
                                        </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==5)?(publicPreExtend+s):(publicPre+s);
                                                
                s=string.Format(s,"TradeForDeleAndCorp",""","代理合作信息");
                return s;
            }
        }
        #endregion 

        #region 站内邮件
        /// <summary>
        ///  Menuid==6
        /// </summary>
        protected   string MessageMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='/User/Message2007/?box=0&dvid=6'  >收件箱</a></li>
                                        <li><a href='/User/Message2007/SendList.aspx?box=1&dvid=6'  >发件箱</a></li>
                                        <li><a href='/User/BusinessContacts/?dvid=6'  >商业伙伴</a></li>
                                        <li><a href='/User/BlackContacts/?dvid=6'  >黑名单</a></li>
                                        <li><a href='/User/MobileMessageSet/?dvid=6'  >短信提醒设置</a>"+_vipImage+@"</li>
                                    </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==6)?(publicPreExtend+s):(publicPre+s);
                                                    
                s=string.Format(s,"Message",""","站内邮件");
                return s;
            }
        }
        #endregion 
        #region 推荐及订阅列表
        /// <summary>
        ///  Menuid==7
        /// </summary>
        protected   string MagzineAndSubscribeMenu
        {
            get
            {
                string s="";
                                s= @" <ul>
                                        <li><a href='/User/Subscribe/?dvid=7'>免费索取</a></li>
                                        <li><a href='/User/Magzine/CoverPageList.aspx?dvid=7'>历史期刊网络版</a></li>
                                        <li><a href='/User/Magzine/Insert.aspx?dvid=7'>申请刊登产品</a>"+_vipImage+@"</li>
                                        <li><a href='/User/Magzine/default.aspx?dvid=7'>刊登产品列表</a>"+_vipImage+@"</li>
                                        </ul>"
                                +publicEnd;
                s=(MenuExtendDivID==7)?(publicPreExtend+s):(publicPre+s);
                s=string.Format(s,"MagzineAndSubscribe",""","中国农业商情蔬菜卷");
                return s;
            }
        }
        #endregion
        #region 图片管理
        /// <summary>
        ///  Menuid==8
        /// </summary>
        protected   string PictureMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='#?dvid=8'  >上传图片</a></li>
                                        <li><a href='#?dvid=8'  >图片管理</a></li>
                                        </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==8)?(publicPreExtend+s):(publicPre+s);
                s=string.Format(s,"Picture",""","图片管理");
                return s;
            }
        }
        #endregion
        #region 其他列表
        /// <summary>
        ///  Menuid==9
        /// </summary>
        protected   string OtherMenu
        {
            get
            {
                string s="";
                
                    s= @" <ul>
                                        <li><a href='/User/News/Insert.aspx?dvid=9&tp=14'  >发布评论</a></li>
                                        <li><a href='/User/News/?dvid=9&tp=14'  >市场评论</a></li>
                                        </ul>"
                        +publicEnd;
                    s=(MenuExtendDivID==9)?(publicPreExtend+s):(publicPre+s);
                
                
                s=string.Format(s,"Other",""","其他");
                return s;
            }
        }
        #endregion 
        #region 帮助列表
        /// <summary>
        ///  Menuid==10
        /// </summary>
        protected   string HelpMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='#?dvid=10'  >帮助文档</a></li>
                                        <li><a href='#?dvid=10'  >在线咨询</a></li>
                                        </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==10)?(publicPreExtend+s):(publicPre+s);
                s=string.Format(s,"Help",""","帮助");
                return s;
            }
        }
        #endregion 
        #region 蔬菜价格
        /// <summary>
        ///  Menuid==11
        /// </summary>
        protected   string PriceMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='/User/Price/?dvid=11'>价格趋势图</a></li>
                                        <li><a href='/User/Price/Vip.aspx?dvid=11'>价格趋势图（Vip）</a>"+_vipImage+@"</li>
                                        </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==11)?(publicPreExtend+s):(publicPre+s);
                s=string.Format(s,"Picture",""","蔬菜价格");
                return s;
            }
        }
        #endregion
        #region 增值推荐
        /// <summary>
        ///  Menuid==11
        /// </summary>
        protected   string IncrementMenu
        {
            get
            {
                string s="";
                
                s= @" <ul>
                                        <li><a href='/User/Increment/DownloadTrade.aspx?dvid=12'>品种分布区域数据下载</a>"+_vipImage+@"</li>
                                        </ul>"
                    +publicEnd;
                s=(MenuExtendDivID==12)?(publicPreExtend+s):(publicPre+s);
                s=string.Format(s,"Increment",""","增值推荐");
                return s;
            }
        }
        #endregion
        #endregion
        Vegnet.User.Framework.Components.User user=Vegnet.User.Framework.Data.DataDTOProvider.GetUserByCach();
        protected Label labMenuItem;

        #endregion


        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad (e);
            //Page.Response.Write(user.IsBase);
            //Page.SmartNavigation=true;
            
            //2006年10月30日新增　欢迎与邀月交流,net技术与软件架构 是否允许推荐产品到杂志，目前所有注册用户均可。推荐规则见设计文档
            //目前暂不动，合适时应改为case判断
            if(user==null)
            {
                Page.Response.Redirect("/User/Login.aspx");
                return ;
            }
            if(!IsPostBack)
            {
                try
                {
                    this.MenuExtendDivID=(Page.Request["dvid"]!=null)?int.Parse(Page.Request["dvid"].ToString()):-1;
                }
                catch
                {
                    this.MenuExtendDivID=-1;
                }
            }
            if(labMenuItem!=null)
            {
                StringBuilder sb=new StringBuilder();//定义临时变量
                sb.Append("<tr><td height='35'>");//初始化头
                if(user.IsAllowRecommendToMagzine)
                {
                    #region  如果允许推荐
                    #region 用户类型
                    if(user.IsBase)
                    {
                        sb.Append(UserMenu);
                        sb.Append(CompanyMenu);
                        sb.Append(ProductInfoMenu);
                        sb.Append(TradeForSellMenu);
                        sb.Append(TradeForBuyMenu);
                        sb.Append(TradeForDeleAndCorpMenu);
                        sb.Append(MessageMenu);
                        sb.Append(MagzineAndSubscribeMenu);
                        sb.Append(PriceMenu);
                        //+PictureMenu
                        sb.Append(IncrementMenu);
                        sb.Append(OtherMenu);
                        //+HelpMenu
                        
                    }
                    else
                    {
                        sb.Append(UserMenu);
                        sb.Append(CompanyMenu);
                        sb.Append(ProductInfoMenu);
                        sb.Append(TradeForSellMenu);
                        sb.Append(TradeForBuyMenu);
                        sb.Append(TradeForDeleAndCorpMenu);
                        sb.Append(MessageMenu);
                        sb.Append(MagzineAndSubscribeMenu);
                        sb.Append(PriceMenu);
                        //+PictureMenu
                        sb.Append(IncrementMenu);
                        sb.Append(OtherMenu);
                        //+HelpMenu

                    }
                    #endregion
                    #endregion
                }
                else
                {
                    #region 如果不允许推荐
                    #region 用户类型
                    if(user.IsBase)
                    {
                        sb.Append(UserMenu);
                        sb.Append(CompanyMenu);
                        sb.Append(ProductInfoMenu);
                        sb.Append(TradeForSellMenu);
                        sb.Append(TradeForBuyMenu);
                        sb.Append(TradeForDeleAndCorpMenu);
                        sb.Append(MessageMenu);
                        sb.Append(OtherMenu);
                        //+HelpMenu
                    }
                    else
                    {
                        sb.Append(UserMenu);
                        sb.Append(CompanyMenu);
                        sb.Append(ProductInfoMenu);
                        sb.Append(TradeForSellMenu);
                        sb.Append(TradeForBuyMenu);
                        sb.Append(TradeForDeleAndCorpMenu);
                        sb.Append(MessageMenu);
                        sb.Append(OtherMenu);
                        //+HelpMenu

                    }
                    #endregion
                    #endregion
                }
                sb.Append("</td></tr>");//初始化尾
                this.labMenuItem.Text=sb.ToString();
            }
            
        }
    
    }
}